Carbonizing machine



11 1923. Dec w. w. LATTA CAHBONIZING MACHINE Filed July 2, 1921 3 Sheets-Sheet 1 Dec. 11 1923.

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Patented Dec. 1 1 1923.

UNITED" STATES PATENT oFFIcE.

WILLIAM W. LAT'IA, OF MINNEAPOLIS, IIINNESOTA, ASSIGNOR OF ONE-THIRD 'I'O EDWARD BARCEARD'I, ONE-THIRD TO PHILIP W. WIBTH, AND ONE-THIRD TO LAT'I'I 8c MANDERS 00., ALL OF MINNEAPOLIS, MINNESOTA.

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Application filed July 2, 1921. Serial No. 482,09t.

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Be it known that l, WILLIAM W. LATIA, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and t State of Minnesota, have invented certain new and useful improvements in Carbonizing Machines; and. l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enl able others skilled in the art to which it appertains to make and use the same.

My invention relates to the art of ap plying coatings or solid surfaces of carbon, graphite, arafiin and the like .to paper l sheets. Hltherto, this has been done in various diderent ways by the use of machines f or apparatuses designed solely for such purpose and operating indepen en tly of other machines, such as printing presses and fold- .2@ ing or cutting machines.

line of the most important uses of this ,machine, or apparatus is to apply carbon surfaces to the leaves of so-called sales books. These leaves, as generally made Q5 and used, have rinted zones or portions and intervening car 11 surfaces and also certain blank surfaces, which are arranged to receive certain written memorandum both directly from a pencil and from the carbon.

Hitherto, it has been the practice to first run the paper sheet or web through a special coating machine that would lay the coating of carbon, graphite, paraffin or similar or other coating material on the surface of the paper; and (then the pa er was rewound into convenient rolls, which were later taken to the rotary printing press where the printed matter was applied to the paper. I y

In accordance with my invention, I interpose the coating machine, that is, the machine for applying the carbon or the like, between a printing press and an automatic folding or cutting machine and operativelg connect the same to run in synchronism bot with the press and folding or cutting ma-- chine, so that-said three machines operate" continuously and perform their several functions in the proper sequence and order The coating machine, in itself, involves novel features but, largely, its novelty resides in its co-ordination with the; press and folding or cutting machine, so that the' ting machine run in synchronism press, the coating machine and the folding or cutting machine operate as a single complete machine.

in the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. l is a right side elevation partly in I diagram and partly in full lines showing the coating machine and its manner of association with and cooperative connection to the printing press and folding and cutting machine Fig. 2 is a fragmentary vertical sectien of the melting pot and its steam connections;

Fig. 3 is a lefit side elevation of the coating' machine, showing the same on a larger scale than in Fig. 1;

Fig. 4 is a vertical longitudinal section taken through the machine illustrated in Fig. 3 in a plane approximately at the transvelse center thereof and viewing said parts from the right toward the left or in the samedirection as in Fig. l; and

Fig. 5 is a transverse vertical section taken approximately on the irregular line 5+5 of Fig. 3, some parts being shown in full.

Elli

The printing press shown in Fig. 1 may be of the type well known to the trade as a Meizel press. This press is indicated as an entirety by the numeral 6. Also, the

folding and cutting machine shown in Fig. 1 may be assumed to be of the type well known as the Meizel folder or cutting mahorizontal shatt 10 that is suitably geared thereto so that the press and folding or cutand with a p I perly timed action." v t T e sheet or web of paper 3 is rnii throu the press and folder or cutting machine in the customary and well known mannerand j over suitable guides and rollers not neces-' st for the purposes of this case toconsider. will.v now describe the coating machine in its preferred form'and one wa in which'it may be coupled to be driven om and run coatin roller or drum 12, guide rollers 13 and 14 an cooling rollers or drums 15 and 16. The rollers or drums 12, 15 and 16 are hollow but, at one end or at one side of the trunnion 15 and over a sprocket 23 that is.

suitabl geared to the transmission shaft 10.

At the opposite side of the machine, the rollers 12, 15 and 16, respectively, are provided-with hollow trunnions 12*, 15 and 16 that are journaled in suitable hearings on the frame 11. The outer ends of the hollow trunnions 12 and 15 are arranged to rotate,

respectively, within non -rotary glandequipped couplin heads 24, 25 and 26.

The coating r0 ler 12 is arranged to run partly immersed in the hot coating liquid y contained in a an or receptacle 27. This pan is mounted or vertical movements ref? erably as follows: To the ends thereo are secured vertical racks 28, guided for vertical movements by brackets 29 on the sides of the frame 11. The racks 28 mesh with pin ions 30 on a transverse shaft 31 journaled in hearings onthe frame 11 and provided at one end with an operating crank 32 and wlth a ratchet wheel 33, which latter is adapted to be locked by a dog 34 pivotally supported at one side of the frame 11. The purpose of vertically adjusting the pan 27 is to properly regulate the depth to which the roller 12 will run in the coating liquid By reference particularly to Fig. 4, it will be seen that the paper sheet or web 3 runs under the guide rollers 13 and 14 and directly over the uppler surface of the coating roller 12, by who latter the coating ma- 1381181 18 applied to the under surface of said sheet or web. It is also importantto note that the uncoated side of the sheet or web 31 runs over the roller 15 and, later, that the coated side thereof runs in contact with the under surfaces of the roller 16. For carbonizing the paper sheet or web, a mixture of pulverized carbon and paraflin wax may be used. This mixture, as well as other material which may be used, will be in liquid form only when quite hot and will solidify as soon as cool. Hence, the roller 12 must be kept hot and the cooling rollers 15 and 16 must be kept cold.

The coating roller 12 rotates in the direction of the arrow marked thereon in Fig. 4, and to scrape off surplus carbon or coating solution, a small scraper blade 36 is ivotally connected to lugs 37 on the sides of t is frame 11 and is made adjustable by a screw 38.

To scrape off surplus carbon from the under surface of the sheet or web 3 and to even up the application thereof, I provide a scraper blade or device 39 that is mounted on arms 40 pivoted to the frame 11 and made vertically adjustable by screws 41. This scraper blade 39 is hollow and, at one end, is tapped by an inlet pipe 42 and at its other end, by a discharge pipe 43.

The coating material is primaril placed in a melting pct 44 that is formed with a hot water or steam jacket 45 and is supported in an elevated position. The melting pct 44 is shown as provided with a removable cover and its bottom is connected by a delivery pipe 47, to one end of the solution-containing pan'27.

On the continuously running paper sheet or web 3/, it is frequently or, in fact, usually desirable, even on the carbonized side thereof, .to leave clear or uncarbonized zones or strips on which certain matter may be printed. or written; and this I accomplish y the use of thin sheet metal so-called blanking strips 49 shown as secured to heads 50 adjustably secured by set screws 51 on a transverse rod 52 su ported by the sides of the frame 11. The ree ends of the strips 49 are curved and are placedv between the upper surface of the roller 12 and the overlying portion of the web y, so that they prevent carbon from being applied to the web where said strips 49 are applied.

The pan 27, at its underside or bottom, is provided with a steam chamber 27 that is tapped at one end by a steam supply pipe 53 and' at the same end by a steam discharge pipe 54. The pipe 53, by a telescopical joint 55, is connected to a main steam supply pipe 56 that leads from a suitable source of steam supply. The steam supply pipe 56 is connected by a short pipe 57 to a coupling head 24 and from thence through the hollow trunnion 12 to the interior of the roller 12.

From the lower portion of the interior of the roller 12, an outlet pipe 58 extends outward through the hollow trunnion 12 and head 24 and is connected by a telescopical joint 59 to a main steam dischar The steam discharge to said pipe. 60.

The steam supply pipe 42, that leads to the hollow scraper 39, is connected to the steam supply pipe 56 by a flexible joint 61, (see particularly Fig. 3). The steam dispipe 54 is also connected gepipe charge pipe 43, by a. telescopical joint 62, is connected to at stations. pipe 63, which, in turn, is connected-to e main exhaust pixie 60.

he delivery pipe 47 is surrounded by a tubular supporting standard 64, the lower end of which is closed but which, at its lower portion, is tapped by a steam discharge pipe 65. A live steam supply pipe 66 leads to the chamber 45 of the melting pot all. v

To keep the rollers 15 and 16 cold cold water is circulated therethrough as shown,

, through the following connect1ons: The

numeral 6? indicates a cold water supply pipe that is connected by short pipe sections the hollow trunnions 15 68 to the two coupling heads 25 and 26 and thence to the interiors of the rollers 15 and 16 thrcu'gh the hollow trunions and-16". 'lhe numeral 69 indicates cold water return pipes that lead from the upper interior portions of the rollers 15 and 16, out through and 16 and heads and 26 and are connected to a cold Water discharge pipe 7 (l.

, The f pipe 47 is provided with a valve.

47 for controlling the supply of hot coating substance from the melting pct 14 to the pan 2?.

- 0pemtion.

, Obviously, the coating material, which is assumed to be a mixture of paraflin wax and carbon, will be kept in liquid condition in the melting t, M by steam introduced into the chamb r 45.. By opening and closingthe val e 47 in the feed pipe 47,

v the desired amo nt of this coating li uid 'may be kept within-the pan 27 and t ere kept hot by steam delivered into the chember 27. By steam introduced into the coating roller 12, said roller is kept hot, so

"that it will pick up only approximately the desired amount of material for applI- cation to the 'pa or web or sheet 3 As .afore stated, surp' us material will be scraped off of said roller 12 by the blade 36. v

The carbon coating applied-to the under surface of the web 3/ 1n passing over the'hot of course, have been printed on one or both sides, as.de'sired,in

carbon coating scribed its passage 'throu h the press '6. After I the, as been a plied as de-.

,"the web passes. to t e folding or cutting machine where it cut into suitable sections or folded in the usual and well known manner.

The rollers 15 and 16 are geared to run at the same peripheralspeed as the rollers or cylinders ofthe printing press, so that thege will be no tendency to break the paper we 3 Thus, the printing, coating and cutting or folding is rapidly and accurately rformed as a continuous operation and t e cost of 'production of sheets of the general character above described is thereby reduced to a minimum.

It will beunderstood that the sheets may be printed on one or both sides and may be coated on one or both sides and, of course,

may be printed in one or more colors. lhe machine, while capable of use for printing and coating paper sheets or webs for various difi'erent purposes, is, nevertheless, especially well adapted for use in producing the leaves of duplicate and triplicate sales books.

What I-claim is: r

1.. A machine for coatingpa'pr webs or sheets comprising a pan for containing a coating material and means for keeping said pan hot, a coating roller arranged to run partly immersed in the hot liquid contained in said pan, means for guiding the paper'- web against the periphery of said coating roller, a cooling roller over which the paper web is arranged to run, and a blanking strip applied to said coating roller where it contacts with the paper web. a

2. A machine for coating paper webs or sheets comprising a pan for containing a coating material and means for keeping said pan hot, a coating roller arranged to run partly immersed in the hot liquid contained in said pan, means for guiding the paper web against. the periphery of said coating roller, a cooling roller over which the paper web-is arranged to run, and a blanking strip applied to said coating roller where it'contact'swith the paper web, said blanking'strip being adjustable transversely of the web axially .of said roller.

3. A.machine for coating paper webs or sheets comprising a pan for containing a coating material and means for keeping said pan hot, a coating roller arranged to run artly immersed in the hot liquid contained 1n said pan, means for "guiding the paper web against the periphery ofsaid coating roller, a cooling roller over which the paper web is arranged 'to run, and a plurality of thin metal blanking strips applied to said roller where it contacts with the paper web, said blanking strips being laterally adjustable the one toward and from the other.

4. A coating machine comprising a hollow coating roller having connections. for the introduction of a heating medium there into, a pair of hollow cooling rollers having means for introducing a cooling medium thereinto,' guides for directing a paper stnp first against the periphery of said coating roller,' thence with its uncoated surface against the periphery of the first cooling roller and thence with its coated surface against the periphery of the second cooling roller, and a blanking strip engageable with the periphery of said coating roller where it contacts with the paper web.

5. A coating machine comprising a hollow coating roller having connections for the introduction of a heating medium thereinto, a pair of hollow cooling rollers having means for introducing a cooling medium thereinto, guides for directing a paper strip first against the periphery of said coating roller, thence with its 'uncoated surface against the periphery of the first cooling roller and thence with its coated surface 7 against the periphery of the second cooling ;roller, and means for driving said coating low coating roller havin means for introducing a cooling medium thereinto, guides for directing a paper strip first against the periphery of said coating roller; thence w th its uncoated surface against the periphery of the first cooling roller and thence with its coated surface against the periphery of the second cooling roller, and a pan for containing a hot coating substance in which said coating roller is arranged to run, said pan having a steam chamber under its bottom, and a steamjacketed melting pot having a feed pipe for delivering to said pan.

7. In a coating machine, the combination with a coating roller and a co-o rating pan for containing a coating material, of a melting pot located above said pan and having a feed tube delivering thereto, said melting pot and pan having steam chambers and steam supply connections whereby they may both be kept hot and the coating material therein contained kept in fluid condition.

8. In a coating machine, the combination with a coating roller and a co-operating pan for containing a coating material, of a melting pot located above said pan and having a feed tube delivering thereto, said melting pot and pan having steam chambers and steam supply connections whereby they may both be kept hot and the coating material therein contained kept in fluid condition, said feed pipe having a manually operated valve.

In testimony whereof I afiix my signature.

WILLIAM W. LATTA. 

